Magnetic recording medium having reinforced substrate

A tape-like magnetic recording medium comprising:

• a reinforced substrate;
• and
• a recording layer arranged on the reinforced substrate,
• the reinforced substrate including:
• a substrate that has a first face and a second face opposed to each other, and has an average thickness of 4 μm or smaller;
• and
• a metal layer that contains cobalt, arranged on the first face, wherein an average thickness of the metal layer is larger than 200 nm,
• the reinforced substrate by itself causing thereon a depth of indentation of 0.25 μm or shallower, when a 0.7-mm-diameter hard sphere of sufficient hardness to form an indentation on the reinforced substrate is impressed against the second face under 5.0 gf load for 10 seconds.